INVESTIGADORES
ZURITA Gustavo Andres
congresos y reuniones científicas
Título:
Litter decomposition in tree plantations: the role of the distance to the native forest
Autor/es:
GATTI, M.G.; ZANINOVICH, S.C.; ZURITA, G.A.
Lugar:
Buenos Aires
Reunión:
Simposio; 32º New Phytologist Symposium; 2013
Institución organizadora:
New Phytologist Trust, Universidad Católica Argentina
Resumen:
decomposition of a given substrate (the substrate quality?matrix quality interaction hypothesis,
SMI). In a pine plantation the detritus quality changes from native forest edge into the plantation
and, consequently, the quality of the matrix layer also changes. In order to evaluate the distance
effects in litter decomposition rates we performed a pine decomposition experiment. We work in 5
pine plantations and neighboring native forests, and we quantify pine decomposition by incubating
420 litter bags at 10 different distances from the edge (0, 5, 10, 15, 30, 50, 100, 150, 200 and 300 m)
and 6 times (1, 3, 6, 9, 12, 18 months). We present results from the two first collections (1 and 3 m):
pine litter lost an average of 18% and 27% of biomass respectively, and no differences were
detected along the distance gradient, however some tendencies of increased pine litter
decomposition in the plantation interior are emerging. These results could represent evidences
supporting the SMI hypothesis and could be related to changes in decomposer communities, but
other factors such as microclime could be also changing the plantation.